Plat 25 is a platinum based 1:1 mix ratio (by weight or volume) silicone mold making rubber that when cured yields a soft and pliable 25A shore/durometer. Plat 25 complies with FDA 21 CFR 177.2600 and can be used for making molds for delicate castings including chocolate, fondant, and sugar.Colour - YellowMixed Viscosity 6000 cpsHardness 25A ShoreTemperature Range -67 to 395FRatio 1 to 1 by weight or volumeOpen Time 45 minutesDemould Time 18 to 24 hours